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Finding the Fourth Proportional to 7,237.72, 10,842.02 and 5,485.72

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Solution

The fourth proportional to 7,237.72, 10,842.02 and 5,485.72 is: 8,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,237.72 : 10,842.02 = 5,485.72 : x
  2. Step 2: Convert to fraction form
    7,237.72/10,842.02 = 5,485.72/x
  3. Step 3: Cross multiply
    7,237.72x = 10,842.02 × 5,485.72
  4. Step 4: Simplify right side
    7,237.72x = 59,476,285.95
  5. Step 5: Solve for x
    x = 59,476,285.95/7,237.72
  6. Step 6: Final answer
    x = 8,217.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.